#include <gtest/gtest.h>

int add(const int a, const int b) { return a + b; }

TEST(AddTest, PositiveNumbers) { EXPECT_EQ(add(2, 3), 5); }
TEST(AddTest, NegativeNumbers) { EXPECT_EQ(add(-2, -1), -3); }
TEST(AddTest, ZeroNumbers) { EXPECT_EQ(add(0, 0), 0); }